@misc{indiciae7b8e75ab6b38,
  title = {Prehatching motility and hatching behavior in the chick.},
  author = {V Hamburger and R Oppenheim},
  year = {1967},
  doi = {10.1002/jez.1401660203},
  url = {https://pubmed.ncbi.nlm.nih.gov/6080550/},
  note = {Source identifier: 6080550}
}